from. Northern Yucatan. 203 



cies better than to M. cinerascens^ which lias rather longer 

 wings than any of its allies. " I have examples of all the Bpecies 

 enumerated by Kaup, and subjoin a table of measurements of 

 the wings and tails, in the order given by him, adding those of 

 my 31. cinerascens : 



Wing. Tail. 



M. coojieri 4 in. 3^ 



" crinitus 4 3|- 



" valid us (gossti, Bp.) 3|a4 3f 



" mexicanus 3-| '■'>■* 



" stolldus '■">{ '■'•[ 



" cinerascens ^ il ^i ^j\ 



It will thus be seen the wing measurements differ in the 

 order given by Kaup. M. mexicanus having the wings shorter 

 than any except 31. stolldus, whereas in 31. cinerascens the 

 wings and tail exceed all of them in length. This, I think, 

 clearly establishes the integrity of my species, and also the 

 probability of the name of mexicanus being applicable to the 

 Yucatan bird, which is further strengthened by locality. 



The two species differ materially in other respects; the ru- 

 fous outer edgings to the quills in mexicanus are much darker ; 

 the abdomen and under tail coverts duller in color, more of a 

 tawny-yellow ; the rufous on the inner webs of the tail feathers 

 occupies but half the width of the web on the innermost feather, 

 becoming less on the outer one.-, and existing only od the mar- 

 gin of the outermost ; in 31. cinerascens this color covers the 

 whole inner webs of the tail feathers, except a! their end.-, the 

 outer one only having a narrow dark line next theshafl ; in my 

 species the under coloring is paler and more ashy on the neck 

 and breast, the outer tail feather edged with white, and the 

 wings more conspicuously margined with whitish. 



In the species under examination the head is of a darker 

 brown, with a cast of rufous, and the bill broader than in 

 cinerascens. 



